GAOTek Portable Dew Point Analyzer

GAOTek portable dew point analyzer adopts a capacitive sensor whose working principle is to measure the amount of trace moisture in the gas based on the change in the capacitance of the water molecule.




The GAO Tek portable dew point meter uses a capacitive sensor. Its working principle is to measure the trace moisture content in the gas based on the change in capacitance value caused by the concentration of water molecules. It uses high-performance alumina and polymer film sensors, and advanced digital processing technology to achieve continuous and rapid online trace moisture analysis.




  • 128*64 LCD
  • High-performance sensor, long life, high sensitivity, and fast response speed.
  • Built-in large-capacity long-life lithium battery, battery power display, automatic voltage protection, can be used continuously for more than 8 hours on a single charge
  • Data backup and data recovery functions
  • Built-in precision air pump (optional)



  • Air separation, petroleum, chemical industry.
  • Semiconductor manufacturing, drying industry, food industry, pharmaceutical industry, machinery manufacturing.
  • Analysis and detection of trace moisture content in various gases in electric power and other industries.



Technical specification

Measuring range  +20-100℃ 0-1000PPmV (optional) 



Simultaneously display PPmV, mg/m3 

Accuracy  ≤±2℃ 
Repeatability  ≤±1.5℃ 
Response time  T90≤5min 
Warm-up time  ≤5min 
Sample gas flow rate  2000±100mL 
Sample gas pressure  0.1Mpa≤inlet pressure≤0.2Mpa 
Power supply  100240VAC 50/60Hz 1A 
Ambient temperature  -5℃~+45℃ 
Environment humidity  ≤90%RH 
Overall dimensions  260 (W) x145 (H) x330 (D), (mm) 
Weight  3.5Kg 



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